42 is a nice number that you can take home and introduce to your family.

I say what it occurs to me to say when I think I hear people say things. More I cannot say.

Trillian had come to suspect that the main reason [Zaphood] had had such a wild and successful life was that he never really understood the significance of anything he did.

The difference between us and a computer is that, the computer is blindingly stupid, but it is capable of being stupid many, many million times a second.

Arthur felt happy. He was terribly pleased that the day was for once working out so much according to plan. Only twenty minutes ago he had decided he would go mad, and now here he was already chasing a Chesterfield sofa across the fields of prehistoric Earth.

For seven and a half million years, Deep Thought computed and calculated, and in the end announced that the answer was in fact Forty-two - and so another, even bigger, computer had to be built to find out what the actual question was.

My favorite piece of information is that Branwell Brontë, brother of Emily and Charlotte, died standing up leaning against a mantelpiece, in order to prove it could be done. This is not quite true, in fact. My absolute favorite piece of information is the fact that young sloths are so inept that they frequently grab their own arms and legs instead of tree limbs, and fall out of trees.